Updating some dependencies

[Robpol86]

Keeping most stuff pinned to old versions. Dropped Python 3.8 support. macOS homebrew defaults to 3.9 so keeping that as the minimum.

New linter insists on new newline.

[github-actions[bot]]

Diff Against Old HTML

M  .buildinfo
M  _static/copybutton.js

--- a/.buildinfo
+++ b/.buildinfo
@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: 5bffff798a97aca2d4895ee09422017e
+config: d212b59b5b8ad885b7b5aa28cfac61cc
 tags: 645f666f9bcd5a90fca523b33c5a78b7

Show 29 lines from copybutton.js

```diff --- a/_static/copybutton.js +++ b/_static/copybutton.js @@ -18,11 +18,11 @@ const messages = { copy_success: "Kopiert!", copy_failure: "Fehler beim Kopieren", }, fr: { copy: "Copier", - copy_to_clipboard: "Copié dans le presse-papier", + copy_to_clipboard: "Copier dans le presse-papier", copy_success: "Copié !", copy_failure: "Échec de la copie", }, ru: { copy: "Скопировать", @@ -235,11 +235,11 @@ const addCopyButtonToCodeCells = () => { var target = document.querySelector( trigger.attributes["data-clipboard-target"].value ); // get filtered text - let exclude = ".linenos, .gp"; + let exclude = ".linenos"; let text = filterText(target, exclude); return formatCopyText(text, "", false, true, true, true, "", ""); }; ```